A large cannon-export trade would require much more production behind the finished guns. Mining and industrial development would receive investment to supply the necessary materials. Transport and other infrastructure would have to support that expansion. The hypothetical also brings an earlier move towards metal shot, extending the industrial demand into ammunition as well as gun manufacture.
Notable Point · 3:24:45-3:25:26
The industries behind a large cannon-export trade
Gun exports would stimulate mining, supporting infrastructure, and ammunition production within the counterfactual.